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CVE-2021-3700

Date: February 24, 2022

A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.

Severity Score

Related Resources (9)

https://bugzilla.redhat.com/show_bug.cgi?id=1992830
https://security-tracker.debian.org/tracker/CVE-2021-3700
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3700
https://lists.debian.org/debian-lts-announce/2022/03/msg00030.html
https://access.redhat.com/security/cve/CVE-2021-3700
https://security.alpinelinux.org/vuln/CVE-2021-3700
https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba
https://nvd.nist.gov/vuln/detail/CVE-2021-3700
https://www.mend.io/vulnerability-database/CVE-2021-3700

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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